Tides Today & Tomorrow in Block Island, RI

TIDE TIMES for Thursday, July 2, 2026
The tide is currently rising in Block Island, RI.
Next low tide : 3:29 pm (0.4 ft)
Next high tide : in 5h 27m at 9:55 am (2.7 ft)
Sunset today : 8:22 pm
Sunrise tomorrow : 5:17 am
Moon phase : Waning Gibbous (94% illuminated)
Tide Station Location : Station #8459338
Common Questions About Tides

Block Island, RI Tides - Sep 2001

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat7:332.97:553.21:340.41:290.46:137:19Full Moon1Sat
2Sun8:093.08:283.22:070.32:050.36:147:17Full Moon2Sun
3Mon8:423.18:593.22:360.22:380.36:157:16Full Moon3Mon
4Tue9:143.19:303.13:010.23:100.36:167:14Full Moon4Tue
5Wed9:463.110:033.03:250.23:420.46:177:12Waning Gibbous5Wed
6Thu10:213.110:402.93:510.24:150.56:187:11Waning Gibbous6Thu
7Fri10:583.111:212.74:210.34:530.66:197:09Waning Gibbous7Fri
8Sat11:413.14:570.45:380.76:207:07Waning Gibbous8Sat
9Sun12:082.612:293.05:400.46:350.76:217:06Third Quarter9Sun
10Mon1:012.51:243.06:330.57:550.86:227:04Third Quarter10Mon
11Tue2:012.52:263.17:350.59:410.76:237:02Third Quarter11Tue
12Wed3:072.63:363.28:450.510:490.56:247:00Waning Crescent12Wed
13Thu4:192.84:483.410:040.311:430.26:256:59Waning Crescent13Thu
14Fri5:243.15:503.711:180.16:266:57Waning Crescent14Fri
15Sat6:203.46:453.912:310.012:20-0.26:276:55Waning Crescent15Sat
16Sun7:123.77:354.01:16-0.31:17-0.46:286:54New Moon16Sun
17Mon8:024.08:254.01:59-0.42:11-0.56:296:52New Moon17Mon
18Tue8:514.19:133.92:40-0.53:02-0.56:306:50New Moon18Tue
19Wed9:394.110:013.63:19-0.43:52-0.46:316:48Waxing Crescent19Wed
20Thu10:284.010:503.33:56-0.34:43-0.16:326:47Waxing Crescent20Thu
21Fri11:193.811:413.04:33-0.15:400.16:336:45Waxing Crescent21Fri
22Sat12:133.55:130.26:500.46:346:43First Quarter22Sat
23Sun12:372.71:123.26:000.58:030.66:356:42First Quarter23Sun
24Mon1:362.52:153.07:070.79:110.76:366:40First Quarter24Mon
25Tue2:412.43:252.88:530.810:120.86:376:38First Quarter25Tue
26Wed3:522.44:332.810:090.811:040.76:386:36Waxing Gibbous26Wed
27Thu4:562.55:292.811:060.711:470.66:396:35Waxing Gibbous27Thu
28Fri5:472.66:142.911:520.66:406:33Waxing Gibbous28Fri
29Sat6:282.86:513.012:240.512:320.56:416:31Waxing Gibbous29Sat
30Sun7:053.07:243.112:570.41:090.46:426:30Full Moon30Sun
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8459338)

Common Questions About Block Island, RI Tides

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What time does the tide turn (slack tide) in Block Island, RI today?

Slack tide in Block Island, RI is approximately 12:42 pm — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

Is this week a spring tide or neap tide in Block Island, RI?

Block Island, RI is currently in a spring phase. Tonight's moon is 94% illuminated. Spring tides (largest swings) occur near new and full moons; neap tides (smallest swings) occur near first and third quarter moons. Tidal ranges this week are near their weekly maximum.

What datum are Block Island, RI tide heights measured from?

Tide heights on this page are measured from Mean Lower Low Water (MLLW), the U.S. NOAA standard. A height of 0 ft represents the 19-year average of each day's lower low tide. Negative values indicate a "minus tide" — water levels below that long-term reference.

What factors can affect the tide predictions for Block Island, RI?

Tide predictions for Block Island, RI come from NOAA's harmonic analysis and are typically accurate within about ±10 minutes on timing and ±0.5 ft on height. Actual water levels can deviate further due to sustained winds, atmospheric pressure changes, river flow, and storm surge. During major weather events, be sure to check US Harbors weather pages for factors that could impact tidal predictions.

Which NOAA station provides tide data for Block Island, RI?

Tide data for Block Island, RI is sourced from NOAA Station #8459338. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8459338.

What is the moon phase in Block Island, RI tonight?

Tonight the moon over Block Island, RI is Waning Gibbous (94% illuminated). This places Block Island, RI in a spring tide cycle, so tidal ranges are near their weekly maximum this week.

US Harbors Tidal Data

The data in our tide charts, tide tables, and tide graphs is provided by NOAA and others. These predictions are derived mathematically from numerous inputs, including data from historical tide stations and nearby locations where sensors are actively recording. As shown in the tide graph at the top of this page, “Predicted” tides (blue) are what forecasting models expect to happen. “Observed” tides (red) are those recorded by local sensors in real time, overlaid on the predictions for direct comparison. We display Observed water levels for a select group of harbors including Portland, Maine, where a physical sensor monitors water levels in real time.

LEARN MORE ABOUT OUR TIDE DATA